Re: Scrolling as overlap avoidance (Re: Alternative approach to scrolling, with demos)

Yes, although I imagine this would be a comparatively rare scenario.

Sent from my mobile phone.  Please excuse any touchscreen-induced weirdness.
On May 8, 2014 9:30 AM, "Loretta Guarino Reid" <lorettaguarino@google.com>
wrote:

>
>
>
> On Thu, May 8, 2014 at 6:22 AM, Christian Vogler <
> christian.vogler@gallaudet.edu> wrote:
>
>> The captions-follow-speaker use case is more complex than just simple
>> left-right alignment. One example that occurs fairly frequently is having a
>> group of multiple speakers all on-screen and they all respond to one
>> particular question or statement with one or two words. Digging up actual
>> video is harder, because one of the examples I remember most clearly I
>> rented, but do not own.
>>
>> For this kind of use case, when we take possible font scaling into
>> account, a horizontal center anchor , and a top vertical anchor almost
>> always makes the most sense - i.e. when you scale the entire caption, you
>> want it still to be centered below the speaker, and you want it to extend
>> below the top margin, so that it does not obscure anything in the speaker
>> itself.
>>
> There may be similar settings where it is desirable to position the text
> over a speaker; in this case, lineAlign:bottom (or a suitable region anchor
> point) would let the cue extend up as it grows.
>
>> If I've been following you correctly, for the pop-on use case that is
>> already handled for the cue box, and can be done irrespective of what
>> happens with regions. Your question is only about regions themselves?
>>
>> Christian
>>
>> Sent from my mobile phone.  Please excuse any touchscreen-induced
>> weirdness.
>> On May 8, 2014 9:19 AM, "Philip Jägenstedt" <philipj@opera.com> wrote:
>>
>>> [I accidentally sent this reply off-list two days ago.]
>>>
>>> In the CPC demo, simple left and right alignment is used to follow the
>>> speaker:
>>> http://www.youtube.com/watch?v=BbqPe-IceP4
>>>
>>> Do you have an example where something more fancy than this is used?
>>> Note that just by using the position, size and align setting you can
>>> do fancier things, but an example would help determine if that's
>>> enough or not.
>>>
>>> On Mon, May 5, 2014 at 6:31 PM, Christian Vogler
>>> <christian.vogler@gallaudet.edu> wrote:
>>> > To me, positioning for speaker identification makes the most sense in
>>> terms
>>> > of the anchor point - this point is the target for each speaker.
>>> >
>>> > Christian
>>> >
>>> >
>>> > On Mon, May 5, 2014 at 12:27 PM, David Singer <singer@apple.com>
>>> wrote:
>>> >>
>>> >>
>>> >> On May 5, 2014, at 5:00 , Philip Jägenstedt <philipj@opera.com>
>>> wrote:
>>> >>
>>> >> >> (2) the background color on the width and height of the rollup area
>>> >> >> needs to be changeable
>>> >> >
>>> >> > Why? As I noted in the "background box tweaking" thread that's still
>>> >> > possible with the sum of my suggestions, but I don't understand what
>>> >> > the use case is.
>>> >>
>>> >> >> (4) move all the cues in the region as a group to another location
>>> >> >
>>> >> > This is also not handled by the current spec. I don't think it makes
>>> >> > sense either, why not just end the cues and repeat them in a new
>>> >> > position?
>>> >> >
>>> >>
>>> >> I agree for these that if you want something ‘similar’ to appear as
>>> what’s
>>> >> already there, the clean thing to do is to re-draw it.  Same content
>>> but in
>>> >> a different region (with different position or colors), and so on.
>>> >>
>>> >> >
>>> >> >> (3) font size changes on the region need to make the region go
>>> bigger
>>> >> >> centered out from the anchor point
>>> >> >
>>> >> > That's not handled by the current spec. We've talked about using
>>> >> > font-relative units but that hasn't happened. I'd love to understand
>>> >> > the use case for this though. Do you have an example video frame
>>> where
>>> >> > scaling around an anchor point is necessary as opposed to mode of
>>> >> > scaling that happens with classical WebVTT?
>>> >> >
>>> >> >
>>> >>
>>> >> I also am curious
>>> >>
>>> >> David Singer
>>> >> Manager, Software Standards, Apple Inc.
>>> >>
>>> >>
>>> >
>>> >
>>> >
>>> > --
>>> > Christian Vogler, PhD
>>> > Director, Technology Access Program
>>> > Department of Communication Studies
>>> > SLCC 1116
>>> > Gallaudet University
>>> > http://tap.gallaudet.edu/
>>> > VP: 202-250-2795
>>>
>>>
>